I struggled with these before I decided on the Musette Salsa over the regular Musette. I felt the flap on the regular size was too large to be lifting up all the time. However, both sizes looked fine on me, and I'm 5'4, so I don't think the regular would look too big on you at all! It just depends on how much you want to hold.
I carry very little on me, the Salsa fits my wallet, cell phone, keys, lipgloss, and my iPod fine.